Brick-molding machine.



-- Y J a v No. 8577.624. PATBNTED JUNE25, 1907.

To Gn I I i BRICK MOLDING MAGHINB. APPLIATIOR FILED JULY 2B. 1908.

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No. 857,624. PATENTBDUB 25. 1907.

T. c. HoLT.

BRICK MoLDING MACHINE.

APPLIOATIOX FILED JULY 23, 1908.

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THOMAS C. HOLT, OF MINNEAPOLIS, MINNESOTA.

- BRICK-MOLDING l MACHINE.`

Specification of Letters Patent.

Patented June 25, 1907.

Application filed July 23,1906. Serial No. 327,311.

To all wiz/0771, t may con/cern:

Be it known that I, THOMAS O. HOLT, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Brick- Alolding Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an improved brick molding machine especially adapted for use in molding concrete bricks, and to the above ends the 'invention consists of the n'ovel devices vand combinations of devices hereinafter described and defined in the claims.

My invention is illustrated in the accompanying drawm gs wherein like characters indicate like parts throughout the' several;

Referring to the drawings Figure 1,' plan view with some parts broken away and some .parts sections, showing the improved;-

machine. Fig. 2 shows the improved ma'- chine in front elevation.

Figs. 5, 6 and 7 are vertical sections taken through the machine on the line :c5 x7 of Fi 1, and Fig. 8 is a plan view of the reversib e base plate. 5 corresponds in position of parts to Fig. 3; Fig. 6 corresponds in position of parts with the full line illustration of Fig. 4; and Fig. 7 corresponds in position of arts with the dotted line illustration in im 4.

z'Dlhe numeral 1 indicates a suitable suporting table for the improved machine. he base 2 of the machine, which is preferably bolted or otherwise rigidly secured to the table 1, is, as shown, in the form of a long rectangular anged plate having a smooth and flat upper face, and provided at its forward edge with projecting hinge lugs 3. A reversible supplemental base plate 4 is hinged to the base plate 2, the same as shown, having projecting hinge lugs 5 that are pivotally connected by pins 6 to the hinge lugs 3 of said base plate 2. When this supplemental base plate 4 is turned upward, it rests iatwise upon the upper'face of the base late 2.

The sides o;l Wall plates of t e mold are .plates laterally with Figs. 3 and 4 showj the improvedmachine in 'end elevation.

made up of two parts or members 7 and 8; the former of whlch is rigidly secured to the basegplate 2, and the latter of which is rigidly secured to thereversible supplemental base plate 4. Both'of the said members 7 and 8 are preferably, and as shown, provided with horizontally projecting upper and lower 6o` anges,and their vertical wall portions are formed on zig-zag rectangular lines, as best shown in Fig. 1. The projecting angles of these 'zig-zagged wall plates are alined' or overlapped in such a manner that they form a lurality of .rectangular bric-lforn the-longitudinal diameters of which correspond to the length. of the bricks; the

transverse diameters of which correspond to the depth o f-the bricks; and the vertical di- 7o ameters of which correspond to the width .of

the "bricksfA .l3y. .adj ust1ng one of the wall 'respect to the other the of. theebrike may44 be varied, and

fhence, gtoarrange' forY such adjustment -the 75 lower lhorizontal flanges of the wall plate or member 8 are provided with slots 9, and machine screws'.v 1 0.` are passed tln-ough 'and screwed intothe-supplemental baseplate 4,

.tliereibynaking the said -wall plate or mem- 8o ber 8 adjustable laterally with respect to the co-operating or opposing wall plate or member 7. The free or swinging edge of the supplemental base plate 4 is formed on such zigzag rectangular lines that, when it is turned upward and onto the face ofthe base plate 2, it will closely e age the -zig-Zag rectangular face of the wallljlate or member 7, and hence will constitute bottoms to the several molds.

VThe wall plate 7 is formed at its ends with 9o a vertical end plate 7a, and the supplemental base plate 4 at its ends is formed with upwardly projecting vertical end plates 4?. On the upper portions of the end plate 7 a are latch lugs l1. To the upper portions of the end plate 4EL latch bars- 12 are pivoted at'l3, and their pivotal movements are limited by slot and pin connections 14 between the said latch bars and corresponding end plates 4, The latch bars 12Y 'at their free ends are roo formed with notches 15 that are adapted to engage their respective latch lugs 11 when the parts are in the operative positions showii by full lines in Figs. 1 to 6 inclusive. The latch bars '12 are provided with verti- 105 cally spaced overlying arms 12a. The said parts 12.--128L constitute U-shaped brackets that are adapted to receive the ends of a palllet board 16.

Thenumeral 17 indicates the elongated rectangular hopper which is adapted to be closely rested upon the upper horizontal flanges of the Wall plates or members 7 and 8, and which, as shown, is provided with depending fingers 18, which engage the outer edges of said flanges and hold the hopper in proper position.

Preparatory to forming the bricks the movable parts of the mold are positioned, as shown, by full lines in Figs. 1, 2, 3 and 5, and the hopper 17 is placed in position as shown in the said figures. The concrete, composed of wet sand and cement, is thrown into the hopper and into the several brick forming molds, and after the material has been properly tamped Within the molds, the hopper is removed, and the surplus concrete is removed rom the tops of the molds, andthe upturned edges of the bricks within the molds are troweled off and smoothed. Then a pallet board 16, (of which pallet boards a large number may be employed in the machine) is placed within the receiving crotches formed by the latch bars 12 and their eXtensions -12a. Then the supplemental base plate l4, together with the parts carried thereby, are turned pivotally upside down, or into the positions shown by full lines of Fig. 7 and the vdotted lines of Fig. 4. This pivotal movement ,of the parts, not only carries the formed bricks away from the iXed or relatively stationary wall plate 7, but turns the bricks edge for edge, and transfers the same from the supplemental base plate 4 to the pallet board 16.

It is Jfurther important to note that when the parts are turned upside down,- as shown in Fig. 7, the combined latches and pallet board holders 12-12a move pivotally downward with respect to the supplemental base plate 4, and thereby drop the upper ends of the bricks slightly away from the said base plate 4, so that when the bricks are removed by the pallet board they will not be rubbed against the said plate 4, or vany other part of the mold for that matter.

With the above described molding machine wherein the bricks are formed With one edge at the bottom of the mold, it is a very easy matter to -form the bricks with orna- -mental outer-edge faces, or to form the same with faces constructed of ornamental or high grade material, or in fact, of any other material which diers from the main body portion of the bricks. For instance,',pby first sifting a small amount of wet sand or pulver- `ized marble into the bottoms of the molds, .and thereafter filling the molds with the concrete, bricks may be formed with their faced iedges, that is their-edges which :are exposed tol view in a finished wall, having' the appearance of white sand bricks or pulverized marble bricks. .K

The machine above described is of comparatively small cost, and may be very easily and rapidly operated, and in practice has been found highly eiicient for the purposes had in view.

What I claim is 1. In a molding machine, the combination with a-supporting frame, of a reversible base l plate supported thereby, and a pair of wall forming mold plates formed on zi zag rectangular lines, and one of which wal forming mold plates is secured to and is reversible with said reversible base plate, and the other of which is independently supported from said supporting frame, substantially as described.

2. In a molding machine, the combination with a supporting frame, of a reversible base plate hinged thereto, and a pair of coperating wall forming mold plates formed on zigzag rectangular lines and coperating to form a multiplicity of molds, one of which wall plates is secured to and reversible with said reversible base plate, and the other of which is independently lsupported from said supporting frame, and which reversible base plate projects beyond the wall plate which is secured thereto to form bottoms to the several molds, substantially as described.

3. In -a molding machine, vthe combination with a fixed bed and a reversible base plate hinged thereto, of a pair of coperating wall forming mold plates secured one to said ixed bed and the other to said reversible base plate, and a pallet board holding device carried by said reversible base plate and having a limited movement thereon and Ioperating when said base late is turned upside down to per-mit said palet board to be lowered With respect to said base plate, substantially as and for the purposes set forth.

4. In a molding machine, the combination With a base and a reversible base plate hinged thereto, of a pair of coperatin wall formi mold plates, secured one to sai base and the other to said reversible base plate, and 'U- shaped bars carried by said reversible base plate and having limited pivotal movements with respect thereto, and which U-shaped bars are adapted to hold a pallet board, and portions of which -are arranged for -co-operation with latch 4lugs on the fixed Wall formi-ng mold lates, substantially as described.

5. iii a molding machine, the combination with a fixed bed and a reversible base plate hinged thereto, of a pair of Wall formin mold plates secured one to said .lixed bed and the other to said reversible base plate, the opposing faces of which wall forming mold p ates are formed on zigzag rectangular lines and the free edge of which reversible base late is also formed on zigzag rectangular ines and projects beyond the wall forming TIO ' lines, one of which Wall forming-mold plates,

mold plate which is secured thereto, and when said base plate is in operative position coincides with the zigzag face of the relatively ixed Wall forming mold plate, substantially as-described.

6. In a molding machine, the combination with a fixed bed, of a pair of Wall formingmold plates formed on zigzag rectangular is adjustable toward and from the coperatf ing zigzag Wall forming mold plate in a direction parallel to the transverse end Walls of the molds formed by the coperating Wallv plates, to thereby set the said mold plates t o form lbricks of dierent depth or thicknessJ substantially as described 7. In a molding machine, the combination with a fixed bed or support, of a ,reversible base plate hinged thereto, and a pair of Wall forming mold plates formed on zigzag rectangular lines, one--o which Wall plates is set the said wall plates to form bricks of different vdepths or thickness, substantially as described;

l In testimony whereof I aliX my signature in presence of two Witnesses.

THOMAS C. HOLT.

Witnesses:

M. E. RONEY, F. D. MERCHANT. 

